MyCruiseForecast

Nagasaki, Japan

Sasebo cruise weather by month

What to expect when your ship is in Sasebo in any month: temperatures, how often it rains, wind, sea temperature and wave heights.

Weather in Sasebo by month

Average highs run from 50°F (10°C) in January to 90°F (32°C) in August. Rain falls on the fewest days in December and the most in July. Sea temperature and wave heights are for the water just off the port.

Typical conditions, 2022–2025 climate record (ECMWF). Rain days are days with at least 1 mm of rain or melted snow. These are averages, not a forecast.
MonthHigh / lowRain daysWindSea tempTypical seas
January50 / 37°F10 / 3°C27%11 mph17 km/h58°F15°C2 ft (0.5 m)Slight; rougher days up to 4 ft
February51 / 37°F10 / 3°C30%11 mph18 km/h57°F14°C2 ft (0.6 m)Slight; rougher days up to 3 ft
March59 / 44°F15 / 7°C37%11 mph17 km/h59°F15°C2 ft (0.5 m)Slight; rougher days up to 3 ft
April67 / 51°F20 / 11°C35%11 mph17 km/h62°F17°C1 ft (0.4 m)Smooth; rougher days up to 3 ft
May74 / 59°F23 / 15°C32%11 mph17 km/h–1 ft (0.4 m)Smooth; rougher days up to 3 ft
June79 / 68°F26 / 20°C49%10 mph16 km/h–1 ft (0.4 m)Smooth; rougher days up to 2 ft
July87 / 77°F31 / 25°C61%11 mph17 km/h–2 ft (0.5 m)Smooth; rougher days up to 3 ft
August90 / 78°F32 / 25°C60%10 mph17 km/h–1 ft (0.4 m)Smooth; rougher days up to 3 ft
September86 / 74°F30 / 23°C45%10 mph16 km/h–1 ft (0.3 m)Smooth; rougher days up to 2 ft
October74 / 60°F24 / 16°C27%9 mph15 km/h77°F25°C1 ft (0.3 m)Smooth; rougher days up to 2 ft
November65 / 50°F18 / 10°C26%10 mph16 km/h71°F21°C1 ft (0.4 m)Smooth; rougher days up to 3 ft
December52 / 40°F11 / 5°C25%11 mph18 km/h62°F17°C2 ft (0.7 m)Slight; rougher days up to 4 ft

Check the forecast for your sailing

Upcoming cruises in Sasebo

3 ships from 3 cruise lines are scheduled here, 4 visits in total. The next 4:

DateShipStopSailing
Fri, Oct 232026Viking OrionVikingCalls14 nights from Tokyo
Tue, Oct 272026Silver MoonSilversea CruisesCalls14 nights from Tokyo
Wed, Nov 182026Star NavigatorStar Dream CruisesCalls5 nights from Keelung
Wed, Dec 232026Star NavigatorStar Dream CruisesCalls5 nights from Keelung

Ships that visit Sasebo

Nearby cruise ports

Wave heights are significant wave height on the Douglas sea state scale. What the numbers mean for a cruise. Sources and method are on the about page.